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<a name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright 2006-2008 Michele Mostarda ( michele.mostarda@gmail.com ).</em>
<a name="3" href="#3">3</a>   <em class="jxr_comment"> * All Rights Reserved.</em>
<a name="4" href="#4">4</a>   <em class="jxr_comment"> *</em>
<a name="5" href="#5">5</a>   <em class="jxr_comment"> * Licensed under the Apache License, Version 2.0 (the 'License');</em>
<a name="6" href="#6">6</a>   <em class="jxr_comment"> * you may not use this file except in compliance with the License.</em>
<a name="7" href="#7">7</a>   <em class="jxr_comment"> * You may obtain a copy of the License at</em>
<a name="8" href="#8">8</a>   <em class="jxr_comment"> *</em>
<a name="9" href="#9">9</a>   <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="10" href="#10">10</a>  <em class="jxr_comment"> *</em>
<a name="11" href="#11">11</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a name="12" href="#12">12</a>  <em class="jxr_comment"> * distributed under the License is distributed on an 'AS IS' BASIS,</em>
<a name="13" href="#13">13</a>  <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a name="14" href="#14">14</a>  <em class="jxr_comment"> * See the License for the specific language governing permissions and</em>
<a name="15" href="#15">15</a>  <em class="jxr_comment"> * limitations under the License.</em>
<a name="16" href="#16">16</a>  <em class="jxr_comment"> */</em>
<a name="17" href="#17">17</a>  
<a name="18" href="#18">18</a>  <strong class="jxr_keyword">package</strong> org.graphnav.swing;
<a name="19" href="#19">19</a>  
<a name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> org.graphnav.model.GraphModel;
<a name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> org.graphnav.model.ModifiableGraphModel;
<a name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> org.graphnav.model.event.GraphModelEvent;
<a name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> org.graphnav.model.event.GraphModelListener;
<a name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> org.graphnav.swing.event.EditingListener;
<a name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> org.graphnav.swing.event.GraphPanelEvent;
<a name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> org.graphnav.swing.event.GraphPanelHistoryListener;
<a name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> org.graphnav.swing.event.GraphPanelListener;
<a name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> org.graphnav.util.GeomUtils;
<a name="29" href="#29">29</a>  
<a name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> javax.swing.JComponent;
<a name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> javax.swing.JDialog;
<a name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> javax.swing.JFrame;
<a name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> javax.swing.JOptionPane;
<a name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> javax.swing.JPanel;
<a name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> javax.swing.TransferHandler;
<a name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> java.awt.*;
<a name="37" href="#37">37</a>  <strong class="jxr_keyword">import</strong> java.awt.event.MouseEvent;
<a name="38" href="#38">38</a>  <strong class="jxr_keyword">import</strong> java.awt.event.MouseListener;
<a name="39" href="#39">39</a>  <strong class="jxr_keyword">import</strong> java.awt.event.MouseMotionAdapter;
<a name="40" href="#40">40</a>  <strong class="jxr_keyword">import</strong> java.awt.geom.Rectangle2D;
<a name="41" href="#41">41</a>  <strong class="jxr_keyword">import</strong> java.util.List;
<a name="42" href="#42">42</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
<a name="43" href="#43">43</a>  <strong class="jxr_keyword">import</strong> java.util.HashSet;
<a name="44" href="#44">44</a>  <strong class="jxr_keyword">import</strong> java.util.Iterator;
<a name="45" href="#45">45</a>  <strong class="jxr_keyword">import</strong> java.util.Set;
<a name="46" href="#46">46</a>  
<a name="47" href="#47">47</a>  <em class="jxr_javadoccomment">/**</em>
<a name="48" href="#48">48</a>  <em class="jxr_javadoccomment"> * This widget is able renderize a set of nodes and related arcs on the basis</em>
<a name="49" href="#49">49</a>  <em class="jxr_javadoccomment"> * of the content of a {@link org.graphnav.model.GraphModel}.</em>
<a name="50" href="#50">50</a>  <em class="jxr_javadoccomment"> */</em>
<a name="51" href="#51">51</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">GraphPanel</a> <strong class="jxr_keyword">extends</strong> JPanel {
<a name="52" href="#52">52</a>  
<a name="53" href="#53">53</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">class</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">MouseEventsHandler</a> <strong class="jxr_keyword">extends</strong> MouseMotionAdapter implements MouseListener {
<a name="54" href="#54">54</a>  
<a name="55" href="#55">55</a>          <em class="jxr_javadoccomment">/**</em>
<a name="56" href="#56">56</a>  <em class="jxr_javadoccomment">         * Set of selected shapes.</em>
<a name="57" href="#57">57</a>  <em class="jxr_javadoccomment">         */</em>
<a name="58" href="#58">58</a>          <strong class="jxr_keyword">private</strong> Set selectedShapes;
<a name="59" href="#59">59</a>  
<a name="60" href="#60">60</a>          <em class="jxr_javadoccomment">/**</em>
<a name="61" href="#61">61</a>  <em class="jxr_javadoccomment">         * Set of overlapped nodes.</em>
<a name="62" href="#62">62</a>  <em class="jxr_javadoccomment">         */</em>
<a name="63" href="#63">63</a>          <strong class="jxr_keyword">private</strong> Set overlappedNodes;
<a name="64" href="#64">64</a>  
<a name="65" href="#65">65</a>          <em class="jxr_javadoccomment">/**</em>
<a name="66" href="#66">66</a>  <em class="jxr_javadoccomment">         * Currently selected node.</em>
<a name="67" href="#67">67</a>  <em class="jxr_javadoccomment">         */</em>
<a name="68" href="#68">68</a>          <strong class="jxr_keyword">private</strong> <a href="../../../org/graphnav/swing/Node.html">Node</a> observedNode;
<a name="69" href="#69">69</a>  
<a name="70" href="#70">70</a>          <em class="jxr_javadoccomment">/**</em>
<a name="71" href="#71">71</a>  <em class="jxr_javadoccomment">         * Currently selected arc.</em>
<a name="72" href="#72">72</a>  <em class="jxr_javadoccomment">         */</em>
<a name="73" href="#73">73</a>          <strong class="jxr_keyword">private</strong> <a href="../../../org/graphnav/swing/Arc.html">Arc</a> observedArc;
<a name="74" href="#74">74</a>  
<a name="75" href="#75">75</a>          <em class="jxr_javadoccomment">/**</em>
<a name="76" href="#76">76</a>  <em class="jxr_javadoccomment">         * Last position of a node.</em>
<a name="77" href="#77">77</a>  <em class="jxr_javadoccomment">         */</em>
<a name="78" href="#78">78</a>          <strong class="jxr_keyword">private</strong> Point lastPosition;
<a name="79" href="#79">79</a>  
<a name="80" href="#80">80</a>          <em class="jxr_javadoccomment">/**</em>
<a name="81" href="#81">81</a>  <em class="jxr_javadoccomment">         * Point mantaining the initial drag point.</em>
<a name="82" href="#82">82</a>  <em class="jxr_javadoccomment">         */</em>
<a name="83" href="#83">83</a>          <strong class="jxr_keyword">private</strong> Point startDrag;
<a name="84" href="#84">84</a>  
<a name="85" href="#85">85</a>          <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> dragStarted = false; <em class="jxr_comment">// If dragStarted == true we're moving some shape.</em>
<a name="86" href="#86">86</a>  
<a name="87" href="#87">87</a>          <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> mousePressed = false;
<a name="88" href="#88">88</a>  
<a name="89" href="#89">89</a>          <strong class="jxr_keyword">protected</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">MouseEventsHandler</a>() {
<a name="90" href="#90">90</a>              <strong class="jxr_keyword">this</strong>.selectedShapes = <strong class="jxr_keyword">new</strong> HashSet() {
<a name="91" href="#91">91</a>  
<a name="92" href="#92">92</a>                 <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> add(Object obj) {
<a name="93" href="#93">93</a>                     <strong class="jxr_keyword">boolean</strong> result = <strong class="jxr_keyword">super</strong>.add(obj);
<a name="94" href="#94">94</a>                     notifyNodesSelection( <strong class="jxr_keyword">new</strong> Node[] { (Node) obj } );
<a name="95" href="#95">95</a>                     <strong class="jxr_keyword">return</strong> result;
<a name="96" href="#96">96</a>                 }
<a name="97" href="#97">97</a>  
<a name="98" href="#98">98</a>                 <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> clear() {
<a name="99" href="#99">99</a>                     <a href="../../../org/graphnav/swing/Node.html">Node</a>[] previousNodes = (Node[]) toArray( <strong class="jxr_keyword">new</strong> Node[size()] );
<a name="100" href="#100">100</a>                    <strong class="jxr_keyword">super</strong>.clear();
<a name="101" href="#101">101</a>                    notifyNodesDeselection( previousNodes );
<a name="102" href="#102">102</a>                }
<a name="103" href="#103">103</a>             };
<a name="104" href="#104">104</a> 
<a name="105" href="#105">105</a>             <strong class="jxr_keyword">this</strong>.overlappedNodes = <strong class="jxr_keyword">new</strong> HashSet();
<a name="106" href="#106">106</a>         }
<a name="107" href="#107">107</a> 
<a name="108" href="#108">108</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> mouseClicked(MouseEvent me) {
<a name="109" href="#109">109</a>             Point point = graphToCanvas(me);
<a name="110" href="#110">110</a> 
<a name="111" href="#111">111</a>             <em class="jxr_comment">//Find for a clicked node.</em>
<a name="112" href="#112">112</a>             <a href="../../../org/graphnav/swing/Node.html">Node</a> current;
<a name="113" href="#113">113</a>             <strong class="jxr_keyword">boolean</strong> nodeFound = false;
<a name="114" href="#114">114</a>             <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i = graphModel.nodesCount() - 1; i &gt;= 0 ; i --) {
<a name="115" href="#115">115</a>                 current = graphModel.getNode(i);
<a name="116" href="#116">116</a>                 <strong class="jxr_keyword">if</strong>(current.getBounds2D(detailLevel).contains(point)) {
<a name="117" href="#117">117</a>                     nodeFound = <strong class="jxr_keyword">true</strong>;
<a name="118" href="#118">118</a>                     nodeClicked(current, me.getPoint(), me.getClickCount() &gt;= 2);
<a name="119" href="#119">119</a>                     <strong class="jxr_keyword">break</strong>;
<a name="120" href="#120">120</a>                 }
<a name="121" href="#121">121</a>             }
<a name="122" href="#122">122</a> 
<a name="123" href="#123">123</a>             <strong class="jxr_keyword">if</strong>( nodeFound ) {
<a name="124" href="#124">124</a>                 <strong class="jxr_keyword">return</strong>;
<a name="125" href="#125">125</a>             }
<a name="126" href="#126">126</a> 
<a name="127" href="#127">127</a>             <em class="jxr_comment">// Find for a clicked arc.</em>
<a name="128" href="#128">128</a>             <a href="../../../org/graphnav/swing/Arc.html">Arc</a> arc = findArc(me);
<a name="129" href="#129">129</a>             <strong class="jxr_keyword">if</strong>(arc != <strong class="jxr_keyword">null</strong>) {
<a name="130" href="#130">130</a>                 arcClicked(arc, point,  me.getClickCount() &gt;= 2);
<a name="131" href="#131">131</a>                 <strong class="jxr_keyword">return</strong>;
<a name="132" href="#132">132</a>             }
<a name="133" href="#133">133</a> 
<a name="134" href="#134">134</a>             <em class="jxr_comment">//selectedShapes.clear();</em>
<a name="135" href="#135">135</a>             panelClicked(point);
<a name="136" href="#136">136</a>         }
<a name="137" href="#137">137</a> 
<a name="138" href="#138">138</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> mouseEntered(MouseEvent e) { }
<a name="139" href="#139">139</a> 
<a name="140" href="#140">140</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> mouseExited(MouseEvent e) { }
<a name="141" href="#141">141</a> 
<a name="142" href="#142">142</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> mousePressed(MouseEvent me) {
<a name="143" href="#143">143</a>             mousePressed = <strong class="jxr_keyword">true</strong>;
<a name="144" href="#144">144</a>             lastPosition = graphToCanvas(me);
<a name="145" href="#145">145</a>             <a href="../../../org/graphnav/swing/Node.html">Node</a> current;
<a name="146" href="#146">146</a>             <strong class="jxr_keyword">boolean</strong> nodeFound = false;
<a name="147" href="#147">147</a>             <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i = graphModel.nodesCount() - 1; i &gt;= 0 ; i --) {
<a name="148" href="#148">148</a>                 current = graphModel.getNode(i);
<a name="149" href="#149">149</a>                 <strong class="jxr_keyword">if</strong>(current.getBounds2D(detailLevel).contains(lastPosition)) { <em class="jxr_comment">// A node found.</em>
<a name="150" href="#150">150</a>                     nodeFound   = <strong class="jxr_keyword">true</strong>;
<a name="151" href="#151">151</a>                     dragStarted = <strong class="jxr_keyword">true</strong>;
<a name="152" href="#152">152</a>                     <strong class="jxr_keyword">if</strong>( selectedShapes.contains(current) ) { <em class="jxr_comment">//The node is already selected (so we want to drag it).</em>
<a name="153" href="#153">153</a>                        <em class="jxr_comment">//Do nothing.</em>
<a name="154" href="#154">154</a>                     } <strong class="jxr_keyword">else</strong> { <em class="jxr_comment">//We're selecting single item.</em>
<a name="155" href="#155">155</a>                         selectedShapes.clear();
<a name="156" href="#156">156</a>                         selectedShapes.add(current);
<a name="157" href="#157">157</a>                         <em class="jxr_comment">//TODO: optimize this.</em>
<a name="158" href="#158">158</a>                         repaint();
<a name="159" href="#159">159</a>                     }
<a name="160" href="#160">160</a>                     <strong class="jxr_keyword">break</strong>;
<a name="161" href="#161">161</a>                 }
<a name="162" href="#162">162</a>             }
<a name="163" href="#163">163</a>             <strong class="jxr_keyword">if</strong>( ! nodeFound ) { <em class="jxr_comment">//If no nodes are located, the selected shapes are cleared.</em>
<a name="164" href="#164">164</a>                 selectedShapes.clear();
<a name="165" href="#165">165</a>                 repaint();
<a name="166" href="#166">166</a>             }
<a name="167" href="#167">167</a>             startDrag = lastPosition;
<a name="168" href="#168">168</a>         }
<a name="169" href="#169">169</a> 
<a name="170" href="#170">170</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> mouseReleased(MouseEvent me) {
<a name="171" href="#171">171</a>             mousePressed = false;
<a name="172" href="#172">172</a>             <strong class="jxr_keyword">if</strong>(dragStarted) {
<a name="173" href="#173">173</a>                 dragStarted   = false;
<a name="174" href="#174">174</a>                 <strong class="jxr_keyword">if</strong>(selectedShapes.size() == 0 || overlappedNodes.size() == 0) { <strong class="jxr_keyword">return</strong>; }
<a name="175" href="#175">175</a>                 <a href="../../../org/graphnav/swing/Node.html">Node</a>[] sNodes = (Node[]) selectedShapes.toArray( <strong class="jxr_keyword">new</strong> Node[selectedShapes.size()] );
<a name="176" href="#176">176</a>                 <a href="../../../org/graphnav/swing/Node.html">Node</a>[] oNodes = (Node[]) overlappedNodes.toArray( <strong class="jxr_keyword">new</strong> Node[overlappedNodes.size()] );
<a name="177" href="#177">177</a>                 addArc(sNodes[0], oNodes[0]);
<a name="178" href="#178">178</a>                 notifyNodesOverlapped(sNodes, oNodes);
<a name="179" href="#179">179</a>                 clearOverlappedNodes();
<a name="180" href="#180">180</a>             }
<a name="181" href="#181">181</a> 
<a name="182" href="#182">182</a>             lastPosition  = <strong class="jxr_keyword">null</strong>;
<a name="183" href="#183">183</a>             startDrag     = <strong class="jxr_keyword">null</strong>;
<a name="184" href="#184">184</a> 
<a name="185" href="#185">185</a>             <em class="jxr_comment">//Optimize this.</em>
<a name="186" href="#186">186</a>             repaint();
<a name="187" href="#187">187</a>         }
<a name="188" href="#188">188</a> 
<a name="189" href="#189">189</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> mouseDragged(MouseEvent me) {
<a name="190" href="#190">190</a> 
<a name="191" href="#191">191</a>             <em class="jxr_comment">//Intercepting dragging events.</em>
<a name="192" href="#192">192</a>             <em class="jxr_comment">//System.out.println("x:" + me.getX() + "y:" + me.getY());</em>
<a name="193" href="#193">193</a>             <strong class="jxr_keyword">if</strong>( me.getX() &lt; 0  &amp;&amp; ( me.getY() &gt; 0 &amp;&amp; me.getY() &lt; drawingArea.getHeight() ) ) {
<a name="194" href="#194">194</a>                 <em class="jxr_comment">//me.consume();</em>
<a name="195" href="#195">195</a> 
<a name="196" href="#196">196</a>                 <em class="jxr_comment">//This is a drag, not a click.</em>
<a name="197" href="#197">197</a>                 JComponent c = (JComponent) me.getSource();
<a name="198" href="#198">198</a>                 <em class="jxr_comment">//Tell the transfer handler to initiate the drag.</em>
<a name="199" href="#199">199</a>                 TransferHandler handler = c.getTransferHandler();
<a name="200" href="#200">200</a>                 handler.exportAsDrag(c, me, TransferHandler.COPY);
<a name="201" href="#201">201</a>                 System.out.println(<span class="jxr_string">"done"</span>);
<a name="202" href="#202">202</a>             }
<a name="203" href="#203">203</a> 
<a name="204" href="#204">204</a> 
<a name="205" href="#205">205</a>             Point mePoint = graphToCanvas(me);
<a name="206" href="#206">206</a>             <strong class="jxr_keyword">if</strong>( dragStarted &amp;&amp; ! selectedShapes.isEmpty() ) { <em class="jxr_comment">//We are moving a selection.</em>
<a name="207" href="#207">207</a> 
<a name="208" href="#208">208</a>                 <strong class="jxr_keyword">int</strong> dx = (<strong class="jxr_keyword">int</strong>) ( mePoint.getX() - lastPosition.getX() );
<a name="209" href="#209">209</a>                 <strong class="jxr_keyword">int</strong> dy = (<strong class="jxr_keyword">int</strong>) ( mePoint.getY() - lastPosition.getY() );
<a name="210" href="#210">210</a>                 <a href="../../../org/graphnav/swing/Node.html">Node</a> current = <strong class="jxr_keyword">null</strong>;
<a name="211" href="#211">211</a>                 <strong class="jxr_keyword">for</strong>( Iterator shapes = selectedShapes.iterator(); shapes.hasNext(); ) {
<a name="212" href="#212">212</a>                     current = (Node) shapes.next();
<a name="213" href="#213">213</a>                     current.move(dx, dy);
<a name="214" href="#214">214</a>                 }
<a name="215" href="#215">215</a> 
<a name="216" href="#216">216</a>                 computeOverlappedNodes(overlappedNodes);
<a name="217" href="#217">217</a> 
<a name="218" href="#218">218</a>                 notifyNodesMoved( (Node[]) selectedShapes.toArray( <strong class="jxr_keyword">new</strong> Node [selectedShapes.size()] ) );
<a name="219" href="#219">219</a> 
<a name="220" href="#220">220</a>             } <strong class="jxr_keyword">else</strong> {  <em class="jxr_comment">// We are performing a multi selection.</em>
<a name="221" href="#221">221</a> 
<a name="222" href="#222">222</a>                 <a href="../../../org/graphnav/swing/Node.html">Node</a> current;
<a name="223" href="#223">223</a>                 selectedShapes.clear();
<a name="224" href="#224">224</a>                 Rectangle2D selectionArea = getSelectionArea();
<a name="225" href="#225">225</a>                 <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i = graphModel.nodesCount() - 1; i &gt;= 0 ; i --) {
<a name="226" href="#226">226</a>                     current = graphModel.getNode(i);
<a name="227" href="#227">227</a>                     <strong class="jxr_keyword">if</strong>(selectionArea.intersects(current.getBounds2D(detailLevel))) {
<a name="228" href="#228">228</a>                         selectedShapes.add(current);
<a name="229" href="#229">229</a>                     }
<a name="230" href="#230">230</a>                 }
<a name="231" href="#231">231</a>                 
<a name="232" href="#232">232</a>             }
<a name="233" href="#233">233</a> 
<a name="234" href="#234">234</a>             lastPosition = mePoint;
<a name="235" href="#235">235</a> 
<a name="236" href="#236">236</a>             <em class="jxr_comment">//TODO: optimize!</em>
<a name="237" href="#237">237</a>             repaint();
<a name="238" href="#238">238</a>         }
<a name="239" href="#239">239</a> 
<a name="240" href="#240">240</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> mouseMoved(MouseEvent me) {
<a name="241" href="#241">241</a> 
<a name="242" href="#242">242</a>             <strong class="jxr_keyword">boolean</strong> somethingChanged = false;
<a name="243" href="#243">243</a>             <strong class="jxr_keyword">if</strong>(observedArc != <strong class="jxr_keyword">null</strong> || observedNode != <strong class="jxr_keyword">null</strong>) { somethingChanged = <strong class="jxr_keyword">true</strong>; }
<a name="244" href="#244">244</a>             observedNode = <strong class="jxr_keyword">null</strong>;
<a name="245" href="#245">245</a>             observedArc  = <strong class="jxr_keyword">null</strong>;
<a name="246" href="#246">246</a> 
<a name="247" href="#247">247</a>             <strong class="jxr_keyword">if</strong>( getDetailLevel() == Renderable.DETAIL_LEVEL_MINIMAL ) {
<a name="248" href="#248">248</a>                 observedNode = findNode(me);
<a name="249" href="#249">249</a>             }
<a name="250" href="#250">250</a> 
<a name="251" href="#251">251</a>             <strong class="jxr_keyword">if</strong>(observedNode == <strong class="jxr_keyword">null</strong>) {
<a name="252" href="#252">252</a>                 observedArc = findArc(me);
<a name="253" href="#253">253</a>                 <em class="jxr_comment">// TODO:</em>
<a name="254" href="#254">254</a>                 <em class="jxr_comment">//Rectangle2D container = arc.getFromNode().getBounds2D(getDetailLevel()).createIntersection( arc.getToNode().getBounds2D(getDetailLevel()) );</em>
<a name="255" href="#255">255</a>                 <em class="jxr_comment">//repaint(container.getBounds());</em>
<a name="256" href="#256">256</a>             }
<a name="257" href="#257">257</a> 
<a name="258" href="#258">258</a>             <strong class="jxr_keyword">if</strong>(somethingChanged || observedNode != <strong class="jxr_keyword">null</strong> || observedArc != <strong class="jxr_keyword">null</strong>) { repaint(); }
<a name="259" href="#259">259</a>         }
<a name="260" href="#260">260</a> 
<a name="261" href="#261">261</a>         <strong class="jxr_keyword">public</strong> Rectangle2D getSelectionArea() {
<a name="262" href="#262">262</a>             <strong class="jxr_keyword">return</strong> mousePressed ? getMinimumContainingRectangle(startDrag, lastPosition) : <strong class="jxr_keyword">null</strong>;
<a name="263" href="#263">263</a>         }
<a name="264" href="#264">264</a> 
<a name="265" href="#265">265</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isObserved(<a href="../../../org/graphnav/swing/Node.html">Node</a> n) {
<a name="266" href="#266">266</a>             <strong class="jxr_keyword">return</strong> observedNode == <strong class="jxr_keyword">null</strong> ? false : observedNode == n;
<a name="267" href="#267">267</a>         }
<a name="268" href="#268">268</a> 
<a name="269" href="#269">269</a>         <strong class="jxr_keyword">public</strong> <a href="../../../org/graphnav/swing/Node.html">Node</a> getObservedNode() {
<a name="270" href="#270">270</a>             <strong class="jxr_keyword">return</strong> observedNode;
<a name="271" href="#271">271</a>         }
<a name="272" href="#272">272</a> 
<a name="273" href="#273">273</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isObserved(<a href="../../../org/graphnav/swing/Arc.html">Arc</a> a) {
<a name="274" href="#274">274</a>             <strong class="jxr_keyword">return</strong> observedArc == <strong class="jxr_keyword">null</strong> ? false : observedArc == a;
<a name="275" href="#275">275</a>         }
<a name="276" href="#276">276</a> 
<a name="277" href="#277">277</a>         <strong class="jxr_keyword">public</strong> <a href="../../../org/graphnav/swing/Arc.html">Arc</a> getObservedArc() {
<a name="278" href="#278">278</a>             <strong class="jxr_keyword">return</strong> observedArc;
<a name="279" href="#279">279</a>         }
<a name="280" href="#280">280</a> 
<a name="281" href="#281">281</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isSelected(<a href="../../../org/graphnav/swing/Node.html">Node</a> n) {
<a name="282" href="#282">282</a>             <strong class="jxr_keyword">return</strong> selectedShapes.contains(n);
<a name="283" href="#283">283</a>         }
<a name="284" href="#284">284</a> 
<a name="285" href="#285">285</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isOverlapped(<a href="../../../org/graphnav/swing/Node.html">Node</a> n) {
<a name="286" href="#286">286</a>             <strong class="jxr_keyword">return</strong> overlappedNodes.contains(n);
<a name="287" href="#287">287</a>         }
<a name="288" href="#288">288</a> 
<a name="289" href="#289">289</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setSelectedNode(<a href="../../../org/graphnav/swing/Node.html">Node</a> n) {
<a name="290" href="#290">290</a>             selectedShapes.clear();
<a name="291" href="#291">291</a>             selectedShapes.add(n);
<a name="292" href="#292">292</a>         }
<a name="293" href="#293">293</a> 
<a name="294" href="#294">294</a>         <strong class="jxr_keyword">public</strong> <a href="../../../org/graphnav/swing/Node.html">Node</a> getSelectedNode() {
<a name="295" href="#295">295</a>             Iterator nodes = selectedShapes.iterator();
<a name="296" href="#296">296</a>             <strong class="jxr_keyword">return</strong> nodes.hasNext() ? (Node) nodes.next() : <strong class="jxr_keyword">null</strong>;
<a name="297" href="#297">297</a>         }
<a name="298" href="#298">298</a> 
<a name="299" href="#299">299</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> singleNodeSelected() {
<a name="300" href="#300">300</a>             <strong class="jxr_keyword">return</strong> selectedShapes.size() == 1;
<a name="301" href="#301">301</a>         }
<a name="302" href="#302">302</a> 
<a name="303" href="#303">303</a>         <strong class="jxr_keyword">private</strong> <a href="../../../org/graphnav/swing/Arc.html">Arc</a> findArc(MouseEvent me) {
<a name="304" href="#304">304</a>             Iterator arcs = getModel().arcs();
<a name="305" href="#305">305</a>             <a href="../../../org/graphnav/swing/Arc.html">Arc</a> current;
<a name="306" href="#306">306</a>             <strong class="jxr_keyword">while</strong>(arcs.hasNext()) {
<a name="307" href="#307">307</a>                 current = (Arc) arcs.next();
<a name="308" href="#308">308</a>                 Point mePoint = graphToCanvas(me);
<a name="309" href="#309">309</a>                 <strong class="jxr_keyword">int</strong> detailLevel = getDetailLevel();
<a name="310" href="#310">310</a>                 Rectangle2D fromNodeBounds = current.getFromNode().getBounds2D(detailLevel);
<a name="311" href="#311">311</a>                 Rectangle2D toNodeBounds   = current.getToNode().getBounds2D(detailLevel);
<a name="312" href="#312">312</a>                 <strong class="jxr_keyword">if</strong>(
<a name="313" href="#313">313</a>                     GeomUtils.inRange(
<a name="314" href="#314">314</a>                         fromNodeBounds.getCenterX(),
<a name="315" href="#315">315</a>                         fromNodeBounds.getCenterY(),
<a name="316" href="#316">316</a>                         toNodeBounds.getCenterX(),
<a name="317" href="#317">317</a>                         toNodeBounds.getCenterY(),
<a name="318" href="#318">318</a>                         mePoint.getX(),
<a name="319" href="#319">319</a>                         mePoint.getY(),
<a name="320" href="#320">320</a>                         10
<a name="321" href="#321">321</a>                     )
<a name="322" href="#322">322</a>                 ){
<a name="323" href="#323">323</a>                     <em class="jxr_comment">//System.out.println("near arc " + current);</em>
<a name="324" href="#324">324</a>                     <strong class="jxr_keyword">return</strong> current;
<a name="325" href="#325">325</a>                 }
<a name="326" href="#326">326</a>             }
<a name="327" href="#327">327</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a name="328" href="#328">328</a>         }
<a name="329" href="#329">329</a> 
<a name="330" href="#330">330</a>         <strong class="jxr_keyword">private</strong> <a href="../../../org/graphnav/swing/Node.html">Node</a> findNode(MouseEvent me) {
<a name="331" href="#331">331</a>             <a href="../../../org/graphnav/swing/Node.html">Node</a> current;
<a name="332" href="#332">332</a>             <strong class="jxr_keyword">int</strong> dl = getDetailLevel();
<a name="333" href="#333">333</a>             Point mp = graphToCanvas(me);
<a name="334" href="#334">334</a>             <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i = getModel().nodesCount() -1; i &gt;= 0;  i--) {
<a name="335" href="#335">335</a>                 current = getModel().getNode(i);
<a name="336" href="#336">336</a>                 <strong class="jxr_keyword">if</strong>(current.getBounds2D(dl).contains(mp)) {
<a name="337" href="#337">337</a>                     <strong class="jxr_keyword">return</strong> current;
<a name="338" href="#338">338</a>                 }
<a name="339" href="#339">339</a>             }
<a name="340" href="#340">340</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a name="341" href="#341">341</a>         }
<a name="342" href="#342">342</a> 
<a name="343" href="#343">343</a>         <strong class="jxr_keyword">private</strong> Set computeOverlappedNodes(Set toRecycle) {
<a name="344" href="#344">344</a>             toRecycle.clear();
<a name="345" href="#345">345</a>             <a href="../../../org/graphnav/swing/Node.html">Node</a> n;
<a name="346" href="#346">346</a>             <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i = 0; i &lt; graphModel.nodesCount(); i++) {
<a name="347" href="#347">347</a>                 n = graphModel.getNode(i);
<a name="348" href="#348">348</a>                 <strong class="jxr_keyword">if</strong>( computeOverlapping(n) ) {
<a name="349" href="#349">349</a>                     toRecycle.add(n);
<a name="350" href="#350">350</a>                 }
<a name="351" href="#351">351</a>             }
<a name="352" href="#352">352</a>             <strong class="jxr_keyword">return</strong> toRecycle;
<a name="353" href="#353">353</a>         }
<a name="354" href="#354">354</a> 
<a name="355" href="#355">355</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> clearOverlappedNodes() {
<a name="356" href="#356">356</a>             overlappedNodes.clear();
<a name="357" href="#357">357</a>         }
<a name="358" href="#358">358</a> 
<a name="359" href="#359">359</a>         <em class="jxr_comment">//TODO: optimize this algorithm.</em>
<a name="360" href="#360">360</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> computeOverlapping(<a href="../../../org/graphnav/swing/Node.html">Node</a> node) {
<a name="361" href="#361">361</a>             <a href="../../../org/graphnav/swing/Node.html">Node</a> current = <strong class="jxr_keyword">null</strong>;
<a name="362" href="#362">362</a>             <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i = graphModel.nodesCount() - 1; i &gt;= 0 ; i --) {
<a name="363" href="#363">363</a>                 current = graphModel.getNode(i);
<a name="364" href="#364">364</a>                 <strong class="jxr_keyword">if</strong>( current.equals(node) || ! selectedShapes.contains(current)) { <em class="jxr_comment">// Every node is always overlapped with itself.</em>
<a name="365" href="#365">365</a>                     <strong class="jxr_keyword">continue</strong>;
<a name="366" href="#366">366</a>                 }
<a name="367" href="#367">367</a>                 <strong class="jxr_keyword">if</strong>(current.getBounds2D(detailLevel).intersects(node.getBounds2D(detailLevel))) {
<a name="368" href="#368">368</a>                     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a name="369" href="#369">369</a>                 }
<a name="370" href="#370">370</a>             }
<a name="371" href="#371">371</a>             <strong class="jxr_keyword">return</strong> false;
<a name="372" href="#372">372</a>         }
<a name="373" href="#373">373</a> 
<a name="374" href="#374">374</a>         <strong class="jxr_keyword">private</strong> Rectangle2D getMinimumContainingRectangle(Point p1, Point p2) {
<a name="375" href="#375">375</a>             <strong class="jxr_keyword">if</strong>(startDrag == <strong class="jxr_keyword">null</strong> || dragStarted) {
<a name="376" href="#376">376</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a name="377" href="#377">377</a>             }
<a name="378" href="#378">378</a>             <em class="jxr_comment">//System.out.println("p1: " + p1);</em>
<a name="379" href="#379">379</a>             <em class="jxr_comment">//System.out.println("p2: " + p2);</em>
<a name="380" href="#380">380</a>             <strong class="jxr_keyword">double</strong> minX = Math.min(p1.getX(), p2.getX());
<a name="381" href="#381">381</a>             <strong class="jxr_keyword">double</strong> minY = Math.min(p1.getY(), p2.getY());
<a name="382" href="#382">382</a>             <strong class="jxr_keyword">double</strong> maxX = Math.max(p1.getX(), p2.getX());
<a name="383" href="#383">383</a>             <strong class="jxr_keyword">double</strong> maxY = Math.max(p1.getY(), p2.getY());
<a name="384" href="#384">384</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> Rectangle2D.Double(minX, minY, maxX - minX, maxY - minY);
<a name="385" href="#385">385</a>         }
<a name="386" href="#386">386</a>     }
<a name="387" href="#387">387</a> 
<a name="388" href="#388">388</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">class</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">HistoryManager</a> {
<a name="389" href="#389">389</a> 
<a name="390" href="#390">390</a>         <strong class="jxr_keyword">class</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">HistoryElem</a> {
<a name="391" href="#391">391</a>             
<a name="392" href="#392">392</a>             <a href="../../../org/graphnav/swing/Node.html">Node</a> node;
<a name="393" href="#393">393</a>             <strong class="jxr_keyword">int</strong>  mode;
<a name="394" href="#394">394</a> 
<a name="395" href="#395">395</a>             <a href="../../../org/graphnav/swing/GraphPanel.html">HistoryElem</a>(<a href="../../../org/graphnav/swing/Node.html">Node</a> n, <strong class="jxr_keyword">int</strong> m) {
<a name="396" href="#396">396</a>                 node = n;
<a name="397" href="#397">397</a>                 mode = m;
<a name="398" href="#398">398</a>             }
<a name="399" href="#399">399</a>         }
<a name="400" href="#400">400</a> 
<a name="401" href="#401">401</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> MAX_HISTORY_SIZE = 20;
<a name="402" href="#402">402</a> 
<a name="403" href="#403">403</a>         <strong class="jxr_keyword">private</strong> List navigationHistory = <strong class="jxr_keyword">new</strong> ArrayList(20);
<a name="404" href="#404">404</a> 
<a name="405" href="#405">405</a>         <strong class="jxr_keyword">private</strong> List listeners = <strong class="jxr_keyword">new</strong> ArrayList();
<a name="406" href="#406">406</a> 
<a name="407" href="#407">407</a>         <strong class="jxr_keyword">int</strong> index = -1;
<a name="408" href="#408">408</a> 
<a name="409" href="#409">409</a>         <strong class="jxr_keyword">void</strong> pushNode(<a href="../../../org/graphnav/swing/Node.html">Node</a> n, <strong class="jxr_keyword">int</strong> m) {
<a name="410" href="#410">410</a>             <strong class="jxr_keyword">if</strong>(navigationHistory.size() == MAX_HISTORY_SIZE) {
<a name="411" href="#411">411</a>                 navigationHistory.remove(0);
<a name="412" href="#412">412</a>             }
<a name="413" href="#413">413</a>             navigationHistory.add(<strong class="jxr_keyword">new</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">HistoryElem</a>(n,m));
<a name="414" href="#414">414</a>             index = navigationHistory.size() - 1;
<a name="415" href="#415">415</a>             notifyElementAdded();
<a name="416" href="#416">416</a>         }
<a name="417" href="#417">417</a> 
<a name="418" href="#418">418</a>         <a href="../../../org/graphnav/swing/GraphPanel.html">HistoryElem</a> prev() {
<a name="419" href="#419">419</a>             index--;
<a name="420" href="#420">420</a>             <strong class="jxr_keyword">if</strong>(index == -1) {
<a name="421" href="#421">421</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a name="422" href="#422">422</a>             }
<a name="423" href="#423">423</a>             <strong class="jxr_keyword">return</strong> (HistoryElem) navigationHistory.get(index);
<a name="424" href="#424">424</a>         }
<a name="425" href="#425">425</a> 
<a name="426" href="#426">426</a>         <a href="../../../org/graphnav/swing/GraphPanel.html">HistoryElem</a> next() {
<a name="427" href="#427">427</a>             index++;
<a name="428" href="#428">428</a>             <strong class="jxr_keyword">if</strong>(index == navigationHistory.size()) {
<a name="429" href="#429">429</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a name="430" href="#430">430</a>             }
<a name="431" href="#431">431</a>             <strong class="jxr_keyword">return</strong> (HistoryElem) navigationHistory.get(index);
<a name="432" href="#432">432</a>         }
<a name="433" href="#433">433</a> 
<a name="434" href="#434">434</a>         <a href="../../../org/graphnav/swing/GraphPanel.html">HistoryElem</a> moveLast() {
<a name="435" href="#435">435</a>             <strong class="jxr_keyword">if</strong>(isEmpty()) {<strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;}
<a name="436" href="#436">436</a>             index = navigationHistory.size() - 1;
<a name="437" href="#437">437</a>             <strong class="jxr_keyword">return</strong> (HistoryElem) navigationHistory.get(index);
<a name="438" href="#438">438</a>         }
<a name="439" href="#439">439</a> 
<a name="440" href="#440">440</a>         <a href="../../../org/graphnav/swing/GraphPanel.html">HistoryElem</a> moveFirst() {
<a name="441" href="#441">441</a>             <strong class="jxr_keyword">if</strong>(isEmpty()) {<strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;}
<a name="442" href="#442">442</a>             index = 0;
<a name="443" href="#443">443</a>             <strong class="jxr_keyword">return</strong> (HistoryElem) navigationHistory.get(0);
<a name="444" href="#444">444</a>         }
<a name="445" href="#445">445</a> 
<a name="446" href="#446">446</a>         <strong class="jxr_keyword">boolean</strong> hasPrev() {
<a name="447" href="#447">447</a>             <strong class="jxr_keyword">return</strong> index &gt; 0;
<a name="448" href="#448">448</a>         }
<a name="449" href="#449">449</a> 
<a name="450" href="#450">450</a>         <strong class="jxr_keyword">boolean</strong> hasNext() {
<a name="451" href="#451">451</a>             System.out.println(<span class="jxr_string">"index: "</span> + index);
<a name="452" href="#452">452</a>             System.out.println(<span class="jxr_string">"size -1: "</span> +  ( navigationHistory.size() - 1) );
<a name="453" href="#453">453</a>             <strong class="jxr_keyword">return</strong> index &lt; navigationHistory.size() - 1;
<a name="454" href="#454">454</a>         }
<a name="455" href="#455">455</a> 
<a name="456" href="#456">456</a>         <strong class="jxr_keyword">boolean</strong> isEmpty() {
<a name="457" href="#457">457</a>             <strong class="jxr_keyword">return</strong> navigationHistory.isEmpty();
<a name="458" href="#458">458</a>         }
<a name="459" href="#459">459</a> 
<a name="460" href="#460">460</a>         <strong class="jxr_keyword">void</strong> addListener(<a href="../../../org/graphnav/swing/event/GraphPanelHistoryListener.html">GraphPanelHistoryListener</a> gphl) {
<a name="461" href="#461">461</a>             listeners.add(gphl);
<a name="462" href="#462">462</a>         }
<a name="463" href="#463">463</a> 
<a name="464" href="#464">464</a>         <strong class="jxr_keyword">void</strong> removeListener(<a href="../../../org/graphnav/swing/event/GraphPanelHistoryListener.html">GraphPanelHistoryListener</a> gphl) {
<a name="465" href="#465">465</a>             listeners.remove(gphl);
<a name="466" href="#466">466</a>         }
<a name="467" href="#467">467</a> 
<a name="468" href="#468">468</a>         <strong class="jxr_keyword">private</strong>  <strong class="jxr_keyword">void</strong> notifyElementAdded() {
<a name="469" href="#469">469</a>             <a href="../../../org/graphnav/swing/event/GraphPanelHistoryListener.html">GraphPanelHistoryListener</a> gphl;
<a name="470" href="#470">470</a>             <strong class="jxr_keyword">for</strong>(Iterator iter = listeners.iterator(); iter.hasNext(); ) {
<a name="471" href="#471">471</a>                 gphl = (GraphPanelHistoryListener) iter.next();
<a name="472" href="#472">472</a>                 gphl.elementAdded();
<a name="473" href="#473">473</a>             }
<a name="474" href="#474">474</a>         }
<a name="475" href="#475">475</a>     }
<a name="476" href="#476">476</a> 
<a name="477" href="#477">477</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> VIEW_ALL = 0;
<a name="478" href="#478">478</a> 
<a name="479" href="#479">479</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> NAVIGATE = 1;
<a name="480" href="#480">480</a> 
<a name="481" href="#481">481</a>     <strong class="jxr_keyword">private</strong> Point translation = <strong class="jxr_keyword">new</strong> Point(0, 0);
<a name="482" href="#482">482</a> 
<a name="483" href="#483">483</a>     <strong class="jxr_keyword">private</strong> <a href="../../../org/graphnav/model/GraphModel.html">GraphModel</a> graphModel;
<a name="484" href="#484">484</a> 
<a name="485" href="#485">485</a>     <strong class="jxr_keyword">private</strong> <a href="../../../org/graphnav/swing/EffectProcessor.html">EffectProcessor</a> effectProcessor;
<a name="486" href="#486">486</a> 
<a name="487" href="#487">487</a>     <strong class="jxr_keyword">private</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">MouseEventsHandler</a> dndListener;
<a name="488" href="#488">488</a> 
<a name="489" href="#489">489</a>     <strong class="jxr_keyword">private</strong> List graphPanelListeners;
<a name="490" href="#490">490</a> 
<a name="491" href="#491">491</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> detailLevel = Renderable.DETAIL_LEVEL_MEDIUM;
<a name="492" href="#492">492</a> 
<a name="493" href="#493">493</a>     <strong class="jxr_keyword">private</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">HistoryManager</a> historyManager = <strong class="jxr_keyword">new</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">HistoryManager</a>();
<a name="494" href="#494">494</a> 
<a name="495" href="#495">495</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> mode = VIEW_ALL;
<a name="496" href="#496">496</a> 
<a name="497" href="#497">497</a>     <strong class="jxr_keyword">private</strong> Dimension drawingArea = <strong class="jxr_keyword">new</strong> Dimension();
<a name="498" href="#498">498</a> 
<a name="499" href="#499">499</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> graphicsEnhanced = <strong class="jxr_keyword">true</strong>;
<a name="500" href="#500">500</a> 
<a name="501" href="#501">501</a>     <strong class="jxr_keyword">public</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">GraphPanel</a>(<a href="../../../org/graphnav/model/GraphModel.html">GraphModel</a> gm, <a href="../../../org/graphnav/swing/EffectProcessor.html">EffectProcessor</a> fp) {
<a name="502" href="#502">502</a>         init(gm, fp);
<a name="503" href="#503">503</a>     }
<a name="504" href="#504">504</a> 
<a name="505" href="#505">505</a>     <strong class="jxr_keyword">public</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">GraphPanel</a>(<a href="../../../org/graphnav/model/GraphModel.html">GraphModel</a> gm) {
<a name="506" href="#506">506</a>         <a href="../../../org/graphnav/swing/DefaultFadeProcessor.html">DefaultFadeProcessor</a> fp = <strong class="jxr_keyword">new</strong> <a href="../../../org/graphnav/swing/DefaultFadeProcessor.html">DefaultFadeProcessor</a>(<strong class="jxr_keyword">this</strong>, gm);
<a name="507" href="#507">507</a>         init(fp, fp);
<a name="508" href="#508">508</a>     }
<a name="509" href="#509">509</a> 
<a name="510" href="#510">510</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> init(<a href="../../../org/graphnav/model/GraphModel.html">GraphModel</a> gm, <a href="../../../org/graphnav/swing/EffectProcessor.html">EffectProcessor</a> fp) {
<a name="511" href="#511">511</a>         graphModel = gm;
<a name="512" href="#512">512</a>         graphModel.addGraphModelListener(
<a name="513" href="#513">513</a>             <strong class="jxr_keyword">new</strong> <a href="../../../org/graphnav/model/event/GraphModelListener.html">GraphModelListener</a>() {
<a name="514" href="#514">514</a>                 <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> modelChanged(<a href="../../../org/graphnav/model/event/GraphModelEvent.html">GraphModelEvent</a> gme) {
<a name="515" href="#515">515</a>                     repaint();
<a name="516" href="#516">516</a>                 }
<a name="517" href="#517">517</a>             }
<a name="518" href="#518">518</a>         );
<a name="519" href="#519">519</a> 
<a name="520" href="#520">520</a>         effectProcessor = fp;
<a name="521" href="#521">521</a> 
<a name="522" href="#522">522</a>         dndListener = <strong class="jxr_keyword">new</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">MouseEventsHandler</a>();
<a name="523" href="#523">523</a>         graphPanelListeners = <strong class="jxr_keyword">new</strong> ArrayList();
<a name="524" href="#524">524</a> 
<a name="525" href="#525">525</a>         <em class="jxr_comment">//Adding internal panel selection istener.</em>
<a name="526" href="#526">526</a>         addGraphPanelListener(iel.igpl);
<a name="527" href="#527">527</a> 
<a name="528" href="#528">528</a>         addMouseListener(dndListener);
<a name="529" href="#529">529</a>         addMouseMotionListener(dndListener);
<a name="530" href="#530">530</a>         setBackground(Color.WHITE);
<a name="531" href="#531">531</a> 
<a name="532" href="#532">532</a>         setTransferHandler( <strong class="jxr_keyword">new</strong> TransferHandler(<span class="jxr_string">"selectedNode"</span>) );
<a name="533" href="#533">533</a>     }
<a name="534" href="#534">534</a> 
<a name="535" href="#535">535</a>     <strong class="jxr_keyword">public</strong> <a href="../../../org/graphnav/model/GraphModel.html">GraphModel</a> getModel() {
<a name="536" href="#536">536</a>         <strong class="jxr_keyword">return</strong> graphModel;
<a name="537" href="#537">537</a>     }
<a name="538" href="#538">538</a> 
<a name="539" href="#539">539</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getDetailLevel() {
<a name="540" href="#540">540</a>         <strong class="jxr_keyword">return</strong> detailLevel;
<a name="541" href="#541">541</a>     }
<a name="542" href="#542">542</a> 
<a name="543" href="#543">543</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setDetailLevel(<strong class="jxr_keyword">int</strong> dl) {
<a name="544" href="#544">544</a>         <strong class="jxr_keyword">if</strong>(detailLevel == dl) { <strong class="jxr_keyword">return</strong>; }
<a name="545" href="#545">545</a>         
<a name="546" href="#546">546</a>         <strong class="jxr_keyword">if</strong>(dl == Renderable.DETAIL_LEVEL_MEDIUM || dl == Renderable.DETAIL_LEVEL_MINIMAL) {
<a name="547" href="#547">547</a>             detailLevel = dl;
<a name="548" href="#548">548</a>             repaint();
<a name="549" href="#549">549</a>         } <strong class="jxr_keyword">else</strong> {
<a name="550" href="#550">550</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Invalid detail level: "</span> + dl);
<a name="551" href="#551">551</a>         }
<a name="552" href="#552">552</a>     }
<a name="553" href="#553">553</a> 
<a name="554" href="#554">554</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getMode() {
<a name="555" href="#555">555</a>         <strong class="jxr_keyword">return</strong> mode;
<a name="556" href="#556">556</a>     }
<a name="557" href="#557">557</a> 
<a name="558" href="#558">558</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setMode(<strong class="jxr_keyword">int</strong> m) {
<a name="559" href="#559">559</a>         <strong class="jxr_keyword">if</strong>(mode == m) {
<a name="560" href="#560">560</a>             <strong class="jxr_keyword">return</strong>;
<a name="561" href="#561">561</a>         }
<a name="562" href="#562">562</a>         
<a name="563" href="#563">563</a>         <strong class="jxr_keyword">if</strong>(m == VIEW_ALL) {
<a name="564" href="#564">564</a>             effectProcessor.disableEnhancement();
<a name="565" href="#565">565</a>         } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong>(m == NAVIGATE) {
<a name="566" href="#566">566</a>             <em class="jxr_comment">//EMPTY.</em>
<a name="567" href="#567">567</a>         } <strong class="jxr_keyword">else</strong> {
<a name="568" href="#568">568</a>            <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(); 
<a name="569" href="#569">569</a>         }
<a name="570" href="#570">570</a>         mode = m;
<a name="571" href="#571">571</a>     }
<a name="572" href="#572">572</a> 
<a name="573" href="#573">573</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> arrange(<a href="../../../org/graphnav/swing/NodeArranger.html">NodeArranger</a> na, Object options) {
<a name="574" href="#574">574</a>         na.arrange(getModel(), getDetailLevel(), <strong class="jxr_keyword">null</strong>, getFadeProcessor(), options);
<a name="575" href="#575">575</a>     }
<a name="576" href="#576">576</a> 
<a name="577" href="#577">577</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addGraphPanelListener(<a href="../../../org/graphnav/swing/event/GraphPanelListener.html">GraphPanelListener</a> gpl) {
<a name="578" href="#578">578</a>         graphPanelListeners.add(gpl);
<a name="579" href="#579">579</a>     }
<a name="580" href="#580">580</a> 
<a name="581" href="#581">581</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> removeGraphPanelListener(<a href="../../../org/graphnav/swing/event/GraphPanelListener.html">GraphPanelListener</a> gpl) {
<a name="582" href="#582">582</a>         graphPanelListeners.remove(gpl);
<a name="583" href="#583">583</a>     }
<a name="584" href="#584">584</a> 
<a name="585" href="#585">585</a> 
<a name="586" href="#586">586</a>     <strong class="jxr_keyword">public</strong> Dimension getPreferredSize() {
<a name="587" href="#587">587</a>         <strong class="jxr_keyword">return</strong> drawingArea;
<a name="588" href="#588">588</a>     }
<a name="589" href="#589">589</a> 
<a name="590" href="#590">590</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> paintComponent(Graphics g) {
<a name="591" href="#591">591</a> 
<a name="592" href="#592">592</a>         <strong class="jxr_keyword">super</strong>.paintComponent(g);
<a name="593" href="#593">593</a> 
<a name="594" href="#594">594</a>         Graphics2D g2d = (Graphics2D) g;
<a name="595" href="#595">595</a> 
<a name="596" href="#596">596</a>         <em class="jxr_comment">// Manages the graphics enhancement.</em>
<a name="597" href="#597">597</a>         <strong class="jxr_keyword">if</strong>(graphicsEnhanced) {
<a name="598" href="#598">598</a> 
<a name="599" href="#599">599</a>             g2d.setRenderingHint(
<a name="600" href="#600">600</a>                     RenderingHints.KEY_ALPHA_INTERPOLATION,
<a name="601" href="#601">601</a>                     RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY
<a name="602" href="#602">602</a>             );
<a name="603" href="#603">603</a>             g2d.setRenderingHint(
<a name="604" href="#604">604</a>                     RenderingHints.KEY_COLOR_RENDERING,
<a name="605" href="#605">605</a>                     RenderingHints.VALUE_COLOR_RENDER_QUALITY
<a name="606" href="#606">606</a>             );
<a name="607" href="#607">607</a>             g2d.setRenderingHint(
<a name="608" href="#608">608</a>                     RenderingHints.KEY_DITHERING,
<a name="609" href="#609">609</a>                     RenderingHints.VALUE_DITHER_ENABLE
<a name="610" href="#610">610</a>             );
<a name="611" href="#611">611</a>             g2d.setRenderingHint(
<a name="612" href="#612">612</a>                     RenderingHints.KEY_FRACTIONALMETRICS,
<a name="613" href="#613">613</a>                     RenderingHints.VALUE_FRACTIONALMETRICS_ON
<a name="614" href="#614">614</a>             );
<a name="615" href="#615">615</a>             g2d.setRenderingHint(
<a name="616" href="#616">616</a>                     RenderingHints.KEY_INTERPOLATION,
<a name="617" href="#617">617</a>                     RenderingHints.VALUE_INTERPOLATION_BICUBIC
<a name="618" href="#618">618</a>             );
<a name="619" href="#619">619</a>             g2d.setRenderingHint(
<a name="620" href="#620">620</a>                     RenderingHints.KEY_RENDERING,
<a name="621" href="#621">621</a>                     RenderingHints.VALUE_RENDER_QUALITY
<a name="622" href="#622">622</a>             );
<a name="623" href="#623">623</a>             g2d.setRenderingHint(
<a name="624" href="#624">624</a>                     RenderingHints.KEY_DITHERING,
<a name="625" href="#625">625</a>                     RenderingHints.VALUE_DITHER_ENABLE
<a name="626" href="#626">626</a>             );
<a name="627" href="#627">627</a>             g2d.setRenderingHint(
<a name="628" href="#628">628</a>                     RenderingHints.KEY_STROKE_CONTROL,
<a name="629" href="#629">629</a>                     RenderingHints.VALUE_STROKE_PURE
<a name="630" href="#630">630</a>             );
<a name="631" href="#631">631</a>             g2d.setRenderingHint(
<a name="632" href="#632">632</a>                     RenderingHints.KEY_TEXT_ANTIALIASING,
<a name="633" href="#633">633</a>                     RenderingHints.VALUE_TEXT_ANTIALIAS_ON
<a name="634" href="#634">634</a>             );
<a name="635" href="#635">635</a> 
<a name="636" href="#636">636</a>         }
<a name="637" href="#637">637</a> 
<a name="638" href="#638">638</a> <em class="jxr_comment">//        ///////</em>
<a name="639" href="#639">639</a> <em class="jxr_comment">//        for(int i = 0; i &lt; 100; i++) {</em>
<a name="640" href="#640">640</a> <em class="jxr_comment">//            Point p = org.graphnav.util.GeomUtils.getRoundPosition(getWidth() / 2, getHeight() / 2, 100, i);</em>
<a name="641" href="#641">641</a> <em class="jxr_comment">//            g.drawRect((int)p.getX(), (int)p.getY(), 5, 5);</em>
<a name="642" href="#642">642</a> <em class="jxr_comment">//        }</em>
<a name="643" href="#643">643</a> <em class="jxr_comment">//        if(true)return;</em>
<a name="644" href="#644">644</a> <em class="jxr_comment">//        ///////</em>
<a name="645" href="#645">645</a> 
<a name="646" href="#646">646</a>         g2d.translate(translation.getX(), translation.getY());        
<a name="647" href="#647">647</a> 
<a name="648" href="#648">648</a>         <a href="../../../org/graphnav/swing/Arc.html">Arc</a> currentArc;
<a name="649" href="#649">649</a>         <a href="../../../org/graphnav/swing/Node.html">Node</a> currentNode;
<a name="650" href="#650">650</a> 
<a name="651" href="#651">651</a>         <a href="../../../org/graphnav/model/GraphModel.html">GraphModel</a> gm = getModel();
<a name="652" href="#652">652</a> 
<a name="653" href="#653">653</a>         gm.startVisit();
<a name="654" href="#654">654</a> 
<a name="655" href="#655">655</a>         <em class="jxr_comment">//Drawing arcs first.</em>
<a name="656" href="#656">656</a>         <strong class="jxr_keyword">for</strong>( Iterator arcs = gm.arcs(); arcs.hasNext(); ) {
<a name="657" href="#657">657</a>             currentArc = (Arc) arcs.next();
<a name="658" href="#658">658</a>             <em class="jxr_comment">//if(currentRenderable.getFromNode().isCollapsed()) { continue; }</em>
<a name="659" href="#659">659</a>             currentArc.paintShape(g2d, dndListener.isObserved(currentArc), false, detailLevel);
<a name="660" href="#660">660</a>         }
<a name="661" href="#661">661</a> 
<a name="662" href="#662">662</a>         Dimension newBounds = <strong class="jxr_keyword">new</strong> Dimension();
<a name="663" href="#663">663</a> 
<a name="664" href="#664">664</a>         <em class="jxr_comment">//Drawing nodes.</em>
<a name="665" href="#665">665</a>         <strong class="jxr_keyword">for</strong>( Iterator nodes = gm.nodes(); nodes.hasNext(); ) {
<a name="666" href="#666">666</a>             currentNode = (Node) nodes.next();
<a name="667" href="#667">667</a> 
<a name="668" href="#668">668</a>             <em class="jxr_comment">// Skipping the observed node.</em>
<a name="669" href="#669">669</a>             <strong class="jxr_keyword">if</strong>( dndListener.isObserved(currentNode) ) { <strong class="jxr_keyword">continue</strong>; }
<a name="670" href="#670">670</a> 
<a name="671" href="#671">671</a>             mergeBounds(newBounds, currentNode.getBounds2D(detailLevel));
<a name="672" href="#672">672</a> 
<a name="673" href="#673">673</a>             <em class="jxr_comment">//if(currentNode.isCollapsed()) { continue; }</em>
<a name="674" href="#674">674</a>             currentNode.paintShape(
<a name="675" href="#675">675</a>                     g2d,
<a name="676" href="#676">676</a>                     dndListener.isSelected(currentNode),
<a name="677" href="#677">677</a>                     dndListener.isOverlapped(currentNode),
<a name="678" href="#678">678</a>                     detailLevel
<a name="679" href="#679">679</a>             );
<a name="680" href="#680">680</a>         }
<a name="681" href="#681">681</a> 
<a name="682" href="#682">682</a>         <em class="jxr_comment">// Painting the observed node on top of everithing.</em>
<a name="683" href="#683">683</a>         <strong class="jxr_keyword">if</strong>( dndListener.getObservedNode() != <strong class="jxr_keyword">null</strong> ) {
<a name="684" href="#684">684</a>             dndListener.getObservedNode().paintShape(
<a name="685" href="#685">685</a>                     g2d,
<a name="686" href="#686">686</a>                     dndListener.isSelected(dndListener.getObservedNode()),
<a name="687" href="#687">687</a>                     dndListener.isOverlapped(dndListener.getObservedNode()),
<a name="688" href="#688">688</a>                     Renderable.DETAIL_LEVEL_MEDIUM
<a name="689" href="#689">689</a>             );
<a name="690" href="#690">690</a>         }
<a name="691" href="#691">691</a> 
<a name="692" href="#692">692</a>         gm.endVisit();
<a name="693" href="#693">693</a> 
<a name="694" href="#694">694</a>         <em class="jxr_comment">//Resizing the dimensional bounds.</em>
<a name="695" href="#695">695</a>         <strong class="jxr_keyword">if</strong>( ! drawingArea.equals(newBounds) ) {
<a name="696" href="#696">696</a>             drawingArea.setSize(newBounds);
<a name="697" href="#697">697</a>             notifyPanelResized(newBounds);
<a name="698" href="#698">698</a>         }
<a name="699" href="#699">699</a> 
<a name="700" href="#700">700</a>         <em class="jxr_comment">//Draw selection rectangle.</em>
<a name="701" href="#701">701</a>         Rectangle2D selection = dndListener.getSelectionArea();
<a name="702" href="#702">702</a>         <strong class="jxr_keyword">if</strong>(selection != <strong class="jxr_keyword">null</strong>) {
<a name="703" href="#703">703</a>             g2d.setClip(getBounds());
<a name="704" href="#704">704</a>             g2d.setStroke(Renderable.THIN_STROKE);
<a name="705" href="#705">705</a>             g2d.setColor(Color.BLACK);
<a name="706" href="#706">706</a>             g2d.draw(selection);
<a name="707" href="#707">707</a>             g2d.setColor(Color.GRAY);
<a name="708" href="#708">708</a>             g2d.setComposite( AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.7f));
<a name="709" href="#709">709</a>             g2d.fill(selection);
<a name="710" href="#710">710</a>         }
<a name="711" href="#711">711</a> 
<a name="712" href="#712">712</a>         <em class="jxr_comment">//Test</em>
<a name="713" href="#713">713</a> <em class="jxr_comment">//        JButton bt = new JButton("Test button!");</em>
<a name="714" href="#714">714</a> <em class="jxr_comment">//        bt.setSize(100, 100);</em>
<a name="715" href="#715">715</a> <em class="jxr_comment">//        AffineTransform oldTransform = g2d.getTransform();</em>
<a name="716" href="#716">716</a> <em class="jxr_comment">//        g2d.translate(200,200);</em>
<a name="717" href="#717">717</a> <em class="jxr_comment">//        g2d.rotate(45);</em>
<a name="718" href="#718">718</a> <em class="jxr_comment">//        bt.paint(g);</em>
<a name="719" href="#719">719</a> <em class="jxr_comment">//        g2d.setTransform(oldTransform);</em>
<a name="720" href="#720">720</a>         <em class="jxr_comment">//////</em>
<a name="721" href="#721">721</a> 
<a name="722" href="#722">722</a>         g2d.dispose();
<a name="723" href="#723">723</a>     }
<a name="724" href="#724">724</a> 
<a name="725" href="#725">725</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> mergeBounds(Dimension dim, Rectangle2D bounds) {
<a name="726" href="#726">726</a>         <strong class="jxr_keyword">double</strong> boundsWidth  = bounds.getX() + bounds.getWidth();
<a name="727" href="#727">727</a>         <strong class="jxr_keyword">double</strong> boundsHeight = bounds.getY() + bounds.getHeight();
<a name="728" href="#728">728</a>         <strong class="jxr_keyword">double</strong> x = dim.getWidth() &gt;  boundsWidth ? dim.getWidth() : boundsWidth;
<a name="729" href="#729">729</a>         <strong class="jxr_keyword">double</strong> y = dim.getHeight() &gt;  boundsHeight ? dim.getHeight() : boundsHeight;
<a name="730" href="#730">730</a>         dim.setSize(x,y);
<a name="731" href="#731">731</a>     }
<a name="732" href="#732">732</a> 
<a name="733" href="#733">733</a>     <strong class="jxr_keyword">protected</strong> Point graphToCanvas(MouseEvent me) {
<a name="734" href="#734">734</a>         Point point = <strong class="jxr_keyword">new</strong> Point(me.getPoint());
<a name="735" href="#735">735</a>         point.translate( - (<strong class="jxr_keyword">int</strong>) translation.getX(), - (<strong class="jxr_keyword">int</strong>) translation.getY());
<a name="736" href="#736">736</a>         <strong class="jxr_keyword">return</strong> point;
<a name="737" href="#737">737</a>     }
<a name="738" href="#738">738</a> 
<a name="739" href="#739">739</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">double</strong> getTranslationX() {
<a name="740" href="#740">740</a>         <strong class="jxr_keyword">return</strong> translation.getX();
<a name="741" href="#741">741</a>     }
<a name="742" href="#742">742</a> 
<a name="743" href="#743">743</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">double</strong> getTranslationY() {
<a name="744" href="#744">744</a>         <strong class="jxr_keyword">return</strong> translation.getY();
<a name="745" href="#745">745</a>     }
<a name="746" href="#746">746</a> 
<a name="747" href="#747">747</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> nextHistoryElement() {
<a name="748" href="#748">748</a>         <strong class="jxr_keyword">if</strong>(historyManager.hasNext()) {
<a name="749" href="#749">749</a>             HistoryManager.HistoryElem hm = historyManager.next();
<a name="750" href="#750">750</a>             setMode(hm.mode);
<a name="751" href="#751">751</a>             setSelectedNode(hm.node);
<a name="752" href="#752">752</a>         }
<a name="753" href="#753">753</a>     }
<a name="754" href="#754">754</a> 
<a name="755" href="#755">755</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> prevHistoryElement() {
<a name="756" href="#756">756</a>         <strong class="jxr_keyword">if</strong>(historyManager.hasPrev()) {
<a name="757" href="#757">757</a>             HistoryManager.HistoryElem hm = historyManager.prev();
<a name="758" href="#758">758</a>             setMode(hm.mode);
<a name="759" href="#759">759</a>             setSelectedNode(hm.node);
<a name="760" href="#760">760</a>         }
<a name="761" href="#761">761</a>     }
<a name="762" href="#762">762</a> 
<a name="763" href="#763">763</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> hasNextHistoryElement() {
<a name="764" href="#764">764</a>         <strong class="jxr_keyword">return</strong> historyManager.hasNext();
<a name="765" href="#765">765</a>     }
<a name="766" href="#766">766</a> 
<a name="767" href="#767">767</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> hasPreviousHistoryElement() {
<a name="768" href="#768">768</a>         <strong class="jxr_keyword">return</strong> historyManager.hasPrev();
<a name="769" href="#769">769</a>     }
<a name="770" href="#770">770</a> 
<a name="771" href="#771">771</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addHistoryListener(<a href="../../../org/graphnav/swing/event/GraphPanelHistoryListener.html">GraphPanelHistoryListener</a> gphl) {
<a name="772" href="#772">772</a>         historyManager.addListener(gphl);
<a name="773" href="#773">773</a>     }
<a name="774" href="#774">774</a> 
<a name="775" href="#775">775</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> removeHistoryListener(<a href="../../../org/graphnav/swing/event/GraphPanelHistoryListener.html">GraphPanelHistoryListener</a> gphl) {
<a name="776" href="#776">776</a>         historyManager.removeListener(gphl);        
<a name="777" href="#777">777</a>     }
<a name="778" href="#778">778</a> 
<a name="779" href="#779">779</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setSelectedNode(<a href="../../../org/graphnav/swing/Node.html">Node</a> n) {
<a name="780" href="#780">780</a>         dndListener.setSelectedNode(n);
<a name="781" href="#781">781</a>         effectProcessor.enhanceNode(n, getMode() == NAVIGATE ? <strong class="jxr_keyword">true</strong> : false, <strong class="jxr_keyword">true</strong>);
<a name="782" href="#782">782</a>     }
<a name="783" href="#783">783</a> 
<a name="784" href="#784">784</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setGraphicsEnhanced(<strong class="jxr_keyword">boolean</strong> flag) {
<a name="785" href="#785">785</a>         graphicsEnhanced = flag;
<a name="786" href="#786">786</a>         repaint();
<a name="787" href="#787">787</a>     }
<a name="788" href="#788">788</a> 
<a name="789" href="#789">789</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isGraphicsEnhanced() {
<a name="790" href="#790">790</a>         <strong class="jxr_keyword">return</strong> graphicsEnhanced;
<a name="791" href="#791">791</a>     }
<a name="792" href="#792">792</a> 
<a name="793" href="#793">793</a>     <strong class="jxr_keyword">protected</strong> <a href="../../../org/graphnav/swing/EffectProcessor.html">EffectProcessor</a> getFadeProcessor() {
<a name="794" href="#794">794</a>         <strong class="jxr_keyword">return</strong> effectProcessor;
<a name="795" href="#795">795</a>     }
<a name="796" href="#796">796</a> 
<a name="797" href="#797">797</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> setViewLocation(<strong class="jxr_keyword">double</strong> x, <strong class="jxr_keyword">double</strong> y) {
<a name="798" href="#798">798</a>         translation.setLocation(x, y);
<a name="799" href="#799">799</a>         repaint();
<a name="800" href="#800">800</a>     }
<a name="801" href="#801">801</a> 
<a name="802" href="#802">802</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> translateViewLocation(<strong class="jxr_keyword">double</strong> dx, <strong class="jxr_keyword">double</strong> dy) {
<a name="803" href="#803">803</a>         translation.translate((<strong class="jxr_keyword">int</strong>) dx, (<strong class="jxr_keyword">int</strong>) dy);
<a name="804" href="#804">804</a>         repaint();
<a name="805" href="#805">805</a>     }
<a name="806" href="#806">806</a> 
<a name="807" href="#807">807</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> nodeClicked(<a href="../../../org/graphnav/swing/Node.html">Node</a> n, Point p, <strong class="jxr_keyword">boolean</strong> edited) {
<a name="808" href="#808">808</a>         <strong class="jxr_keyword">if</strong>(edited) { <em class="jxr_comment">// Node editing.</em>
<a name="809" href="#809">809</a>             editNode(n, p);
<a name="810" href="#810">810</a>         } <strong class="jxr_keyword">else</strong> { <em class="jxr_comment">// Node navigation.</em>
<a name="811" href="#811">811</a>             selectNode(n);
<a name="812" href="#812">812</a>         }
<a name="813" href="#813">813</a>     }
<a name="814" href="#814">814</a> 
<a name="815" href="#815">815</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> selectNode(<a href="../../../org/graphnav/swing/Node.html">Node</a> n) {
<a name="816" href="#816">816</a>         historyManager.pushNode(n, getMode());
<a name="817" href="#817">817</a>         <strong class="jxr_keyword">if</strong>(mode == NAVIGATE) {
<a name="818" href="#818">818</a>             effectProcessor.enhanceNode(n, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">true</strong>);
<a name="819" href="#819">819</a>         } <strong class="jxr_keyword">else</strong> { <em class="jxr_comment">//VIEW_ALL.</em>
<a name="820" href="#820">820</a>             effectProcessor.shiftView(
<a name="821" href="#821">821</a>                 n.getBounds2D(getDetailLevel()).getCenterX(),
<a name="822" href="#822">822</a>                 n.getBounds2D(getDetailLevel()).getCenterY()
<a name="823" href="#823">823</a>             );
<a name="824" href="#824">824</a>         }
<a name="825" href="#825">825</a>     }
<a name="826" href="#826">826</a> 
<a name="827" href="#827">827</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> arcClicked(<a href="../../../org/graphnav/swing/Arc.html">Arc</a> a, Point p, <strong class="jxr_keyword">boolean</strong> edited) {
<a name="828" href="#828">828</a>         <strong class="jxr_keyword">if</strong>(edited) {
<a name="829" href="#829">829</a>             editArc(a, p);
<a name="830" href="#830">830</a>         } <strong class="jxr_keyword">else</strong> {
<a name="831" href="#831">831</a>             followArc(a);
<a name="832" href="#832">832</a>         }
<a name="833" href="#833">833</a>     }
<a name="834" href="#834">834</a> 
<a name="835" href="#835">835</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> panelClicked(Point p) {
<a name="836" href="#836">836</a>         effectProcessor.shiftView(p.getX(), p.getY());
<a name="837" href="#837">837</a>     }
<a name="838" href="#838">838</a> 
<a name="839" href="#839">839</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">IntenalEditingHandler</a> implements <a href="../../../org/graphnav/swing/event/EditingListener.html">EditingListener</a> {
<a name="840" href="#840">840</a> 
<a name="841" href="#841">841</a>         <strong class="jxr_keyword">private</strong> JDialog editingDialog;
<a name="842" href="#842">842</a> 
<a name="843" href="#843">843</a>         <strong class="jxr_keyword">private</strong> <a href="../../../org/graphnav/swing/AbstractRenderable.html">AbstractRenderable</a> currentRenderable;
<a name="844" href="#844">844</a> 
<a name="845" href="#845">845</a>         <strong class="jxr_keyword">protected</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">IntenalEditingHandler</a>() {
<a name="846" href="#846">846</a>             editingDialog = <strong class="jxr_keyword">new</strong> JDialog((JFrame) javax.swing.SwingUtilities.getWindowAncestor(GraphPanel.<strong class="jxr_keyword">this</strong>), <strong class="jxr_keyword">true</strong>);
<a name="847" href="#847">847</a>             editingDialog.setUndecorated(<strong class="jxr_keyword">true</strong>);
<a name="848" href="#848">848</a>             <em class="jxr_comment">//editingDialog.setDefaultCloseOperation();</em>
<a name="849" href="#849">849</a>         }
<a name="850" href="#850">850</a> 
<a name="851" href="#851">851</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> showEditor(<a href="../../../org/graphnav/swing/AbstractRenderable.html">AbstractRenderable</a> a, Point p) {
<a name="852" href="#852">852</a>             currentRenderable = a;
<a name="853" href="#853">853</a>             <a href="../../../org/graphnav/swing/RenderableEditor.html">RenderableEditor</a> re = a.edit(iel);
<a name="854" href="#854">854</a> 
<a name="855" href="#855">855</a>             editingDialog.getContentPane().removeAll();
<a name="856" href="#856">856</a>             editingDialog.getContentPane().setLayout(<strong class="jxr_keyword">new</strong> BorderLayout());
<a name="857" href="#857">857</a>             editingDialog.getContentPane().add(re, BorderLayout.CENTER);
<a name="858" href="#858">858</a>             editingDialog.setLocation(p);
<a name="859" href="#859">859</a>             editingDialog.pack();
<a name="860" href="#860">860</a>             editingDialog.setVisible(<strong class="jxr_keyword">true</strong>);
<a name="861" href="#861">861</a>         }
<a name="862" href="#862">862</a> 
<a name="863" href="#863">863</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> showEditor(<a href="../../../org/graphnav/swing/Node.html">Node</a> fromNode, <a href="../../../org/graphnav/swing/Node.html">Node</a> toNode) {
<a name="864" href="#864">864</a>             fromNode.editNewArc(toNode, iel);
<a name="865" href="#865">865</a>         }
<a name="866" href="#866">866</a> 
<a name="867" href="#867">867</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> editingSucceded() {
<a name="868" href="#868">868</a>             editingDialog.setVisible(false);
<a name="869" href="#869">869</a>             <em class="jxr_comment">//Rectangle2D fromNodeBounds = currentRenderable.getFromNode().getBounds2D(getDetailLevel());</em>
<a name="870" href="#870">870</a>             <em class="jxr_comment">//Rectangle2D toNodeBounds = currentRenderable.getFromNode().getBounds2D(getDetailLevel());</em>
<a name="871" href="#871">871</a>             <em class="jxr_comment">//Rectangle2D repaintArea = fromNodeBounds.createUnion(toNodeBounds);</em>
<a name="872" href="#872">872</a>             <em class="jxr_comment">//repaint(repaintArea.getBounds());</em>
<a name="873" href="#873">873</a>             repaint();
<a name="874" href="#874">874</a>         }
<a name="875" href="#875">875</a> 
<a name="876" href="#876">876</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> editingRejected() {
<a name="877" href="#877">877</a>             editingDialog.setVisible(false);
<a name="878" href="#878">878</a>         }
<a name="879" href="#879">879</a> 
<a name="880" href="#880">880</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> deletionSucceded() {
<a name="881" href="#881">881</a>             editingDialog.setVisible(false);
<a name="882" href="#882">882</a>             <strong class="jxr_keyword">if</strong>(getModel() instanceof ModifiableGraphModel ) {
<a name="883" href="#883">883</a>                 <a href="../../../org/graphnav/model/ModifiableGraphModel.html">ModifiableGraphModel</a> mgm = (ModifiableGraphModel) getModel();
<a name="884" href="#884">884</a>                 <strong class="jxr_keyword">if</strong>(currentRenderable instanceof <a href="../../../org/graphnav/swing/Node.html">Node</a>) {
<a name="885" href="#885">885</a>                     mgm.removeNode((Node) currentRenderable);
<a name="886" href="#886">886</a>                 } <strong class="jxr_keyword">else</strong> {
<a name="887" href="#887">887</a>                     mgm.removeArc((Arc) currentRenderable);
<a name="888" href="#888">888</a>                 }
<a name="889" href="#889">889</a>             } <strong class="jxr_keyword">else</strong> {
<a name="890" href="#890">890</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException();
<a name="891" href="#891">891</a>             }
<a name="892" href="#892">892</a>         }
<a name="893" href="#893">893</a> 
<a name="894" href="#894">894</a>         <strong class="jxr_keyword">private</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">InternalGraphPanelListener</a> igpl = <strong class="jxr_keyword">new</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">InternalGraphPanelListener</a>();
<a name="895" href="#895">895</a> 
<a name="896" href="#896">896</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addArcRequired(<a href="../../../org/graphnav/swing/Node.html">Node</a> fromNode) {
<a name="897" href="#897">897</a>             editingDialog.setVisible(false);
<a name="898" href="#898">898</a>             igpl.init(fromNode);
<a name="899" href="#899">899</a>         }
<a name="900" href="#900">900</a> 
<a name="901" href="#901">901</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addArcRequired(<a href="../../../org/graphnav/swing/Node.html">Node</a> fromNode, <a href="../../../org/graphnav/swing/Node.html">Node</a> toNode, Object arcData) {
<a name="902" href="#902">902</a>             <a href="../../../org/graphnav/swing/Arc.html">Arc</a> newArc = ( (ModifiableGraphModel) getModel()).createArc(fromNode, toNode, arcData);
<a name="903" href="#903">903</a>             ( (<a href="../../../org/graphnav/model/ModifiableGraphModel.html">ModifiableGraphModel</a>) getModel()).addArc(newArc);
<a name="904" href="#904">904</a>         }
<a name="905" href="#905">905</a> 
<a name="906" href="#906">906</a>         <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">class</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">InternalGraphPanelListener</a> implements <a href="../../../org/graphnav/swing/event/GraphPanelListener.html">GraphPanelListener</a> {
<a name="907" href="#907">907</a> 
<a name="908" href="#908">908</a>             <strong class="jxr_keyword">private</strong> <a href="../../../org/graphnav/swing/Node.html">Node</a> fromNode;
<a name="909" href="#909">909</a> 
<a name="910" href="#910">910</a>             <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> active = false;
<a name="911" href="#911">911</a> 
<a name="912" href="#912">912</a>             <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> init(<a href="../../../org/graphnav/swing/Node.html">Node</a> fn) {
<a name="913" href="#913">913</a>                 fromNode = fn;
<a name="914" href="#914">914</a>                 active = <strong class="jxr_keyword">true</strong>;
<a name="915" href="#915">915</a>             }
<a name="916" href="#916">916</a> 
<a name="917" href="#917">917</a>             <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> nodesSelected(<a href="../../../org/graphnav/swing/event/GraphPanelEvent.html">GraphPanelEvent</a> gpe) {
<a name="918" href="#918">918</a>                 <strong class="jxr_keyword">if</strong>(! active) { <strong class="jxr_keyword">return</strong>; }
<a name="919" href="#919">919</a> 
<a name="920" href="#920">920</a>                 String res = JOptionPane.showInputDialog(<span class="jxr_string">"Arc name?"</span>);
<a name="921" href="#921">921</a>                 <strong class="jxr_keyword">if</strong>(res == <strong class="jxr_keyword">null</strong>) { <strong class="jxr_keyword">return</strong>; }
<a name="922" href="#922">922</a>                 <a href="../../../org/graphnav/swing/Arc.html">Arc</a> newArc = ( (ModifiableGraphModel) getModel()).createArc(fromNode, gpe.getSelectedNodes()[0], res);
<a name="923" href="#923">923</a>                 ( (<a href="../../../org/graphnav/model/ModifiableGraphModel.html">ModifiableGraphModel</a>) getModel()).addArc(newArc);
<a name="924" href="#924">924</a>                 active = false;
<a name="925" href="#925">925</a>             }
<a name="926" href="#926">926</a> 
<a name="927" href="#927">927</a>             <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> nodesDeselected(<a href="../../../org/graphnav/swing/event/GraphPanelEvent.html">GraphPanelEvent</a> gpe) {}
<a name="928" href="#928">928</a> 
<a name="929" href="#929">929</a>             <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> nodesMoved(<a href="../../../org/graphnav/swing/event/GraphPanelEvent.html">GraphPanelEvent</a> gpe) {}
<a name="930" href="#930">930</a> 
<a name="931" href="#931">931</a>             <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> nodesOverlapped(<a href="../../../org/graphnav/swing/event/GraphPanelEvent.html">GraphPanelEvent</a> gpe) {}
<a name="932" href="#932">932</a> 
<a name="933" href="#933">933</a>             <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> nodeCollapsed(<a href="../../../org/graphnav/swing/event/GraphPanelEvent.html">GraphPanelEvent</a> gpe) {}
<a name="934" href="#934">934</a> 
<a name="935" href="#935">935</a>             <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> nodeExpanded(<a href="../../../org/graphnav/swing/event/GraphPanelEvent.html">GraphPanelEvent</a> gpe) {}
<a name="936" href="#936">936</a> 
<a name="937" href="#937">937</a>             <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> panelResized(<a href="../../../org/graphnav/swing/event/GraphPanelEvent.html">GraphPanelEvent</a> gpe) {}
<a name="938" href="#938">938</a>         }
<a name="939" href="#939">939</a> 
<a name="940" href="#940">940</a>     }
<a name="941" href="#941">941</a> 
<a name="942" href="#942">942</a>     <strong class="jxr_keyword">private</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">IntenalEditingHandler</a> iel = <strong class="jxr_keyword">new</strong> <a href="../../../org/graphnav/swing/GraphPanel.html">IntenalEditingHandler</a>();
<a name="943" href="#943">943</a> 
<a name="944" href="#944">944</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> editNode(<a href="../../../org/graphnav/swing/Node.html">Node</a> toEdit, Point p) {
<a name="945" href="#945">945</a>         Point frameLocation = javax.swing.SwingUtilities.getWindowAncestor(<strong class="jxr_keyword">this</strong>).getLocation();
<a name="946" href="#946">946</a>         Point nodeLocationInFrame = <strong class="jxr_keyword">new</strong> Point(
<a name="947" href="#947">947</a>                 (<strong class="jxr_keyword">int</strong>) ( frameLocation.getX() + p.getX() ),
<a name="948" href="#948">948</a>                 (<strong class="jxr_keyword">int</strong>) ( frameLocation.getY() + p.getY() )
<a name="949" href="#949">949</a>         );
<a name="950" href="#950">950</a>         iel.showEditor(toEdit, nodeLocationInFrame);
<a name="951" href="#951">951</a>     }
<a name="952" href="#952">952</a> 
<a name="953" href="#953">953</a>     <em class="jxr_comment">// Handles the arc edititng.</em>
<a name="954" href="#954">954</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> editArc(<a href="../../../org/graphnav/swing/Arc.html">Arc</a> toEdit, Point p) {
<a name="955" href="#955">955</a>         iel.showEditor(toEdit, p);
<a name="956" href="#956">956</a>     }
<a name="957" href="#957">957</a> 
<a name="958" href="#958">958</a>     <em class="jxr_comment">//handles an arc selection.</em>
<a name="959" href="#959">959</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> followArc(<a href="../../../org/graphnav/swing/Arc.html">Arc</a> a) {
<a name="960" href="#960">960</a>         selectNode( a.getToNode() );
<a name="961" href="#961">961</a>     }
<a name="962" href="#962">962</a> 
<a name="963" href="#963">963</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addArc(<a href="../../../org/graphnav/swing/Node.html">Node</a> fromNode, <a href="../../../org/graphnav/swing/Node.html">Node</a> toNode) {
<a name="964" href="#964">964</a>         iel.showEditor(fromNode, toNode);
<a name="965" href="#965">965</a>     }
<a name="966" href="#966">966</a> 
<a name="967" href="#967">967</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> notifyNodesSelection(<a href="../../../org/graphnav/swing/Node.html">Node</a>[] nodes) {
<a name="968" href="#968">968</a>         <a href="../../../org/graphnav/swing/event/GraphPanelListener.html">GraphPanelListener</a> gpl;
<a name="969" href="#969">969</a>         <strong class="jxr_keyword">for</strong>(Iterator listeners = graphPanelListeners.iterator(); listeners.hasNext(); ) {
<a name="970" href="#970">970</a>             gpl = (GraphPanelListener) listeners.next();
<a name="971" href="#971">971</a>             gpl.nodesSelected( <strong class="jxr_keyword">new</strong> GraphPanelEvent(<strong class="jxr_keyword">this</strong>, nodes) );
<a name="972" href="#972">972</a>         }
<a name="973" href="#973">973</a>     }
<a name="974" href="#974">974</a> 
<a name="975" href="#975">975</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> notifyNodesDeselection(<a href="../../../org/graphnav/swing/Node.html">Node</a>[] nodes) {
<a name="976" href="#976">976</a>         <a href="../../../org/graphnav/swing/event/GraphPanelListener.html">GraphPanelListener</a> gpl;
<a name="977" href="#977">977</a>         <strong class="jxr_keyword">for</strong>(Iterator listeners = graphPanelListeners.iterator(); listeners.hasNext(); ) {
<a name="978" href="#978">978</a>             gpl = (GraphPanelListener) listeners.next();
<a name="979" href="#979">979</a>             gpl.nodesDeselected( <strong class="jxr_keyword">new</strong> GraphPanelEvent(<strong class="jxr_keyword">this</strong>, nodes) );
<a name="980" href="#980">980</a>         }
<a name="981" href="#981">981</a>     }
<a name="982" href="#982">982</a> 
<a name="983" href="#983">983</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> notifyNodesMoved(<a href="../../../org/graphnav/swing/Node.html">Node</a>[] nodes) {
<a name="984" href="#984">984</a>         <a href="../../../org/graphnav/swing/event/GraphPanelListener.html">GraphPanelListener</a> gpl;
<a name="985" href="#985">985</a>         <strong class="jxr_keyword">for</strong>(Iterator listeners = graphPanelListeners.iterator(); listeners.hasNext(); ) {
<a name="986" href="#986">986</a>             gpl = (GraphPanelListener) listeners.next();
<a name="987" href="#987">987</a>             gpl.nodesMoved( <strong class="jxr_keyword">new</strong> GraphPanelEvent(<strong class="jxr_keyword">this</strong>, nodes) );
<a name="988" href="#988">988</a>         }
<a name="989" href="#989">989</a>     }
<a name="990" href="#990">990</a> 
<a name="991" href="#991">991</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> notifyNodesOverlapped(<a href="../../../org/graphnav/swing/Node.html">Node</a>[] selectedNodes, <a href="../../../org/graphnav/swing/Node.html">Node</a>[] overlappedNodes) {
<a name="992" href="#992">992</a>         <a href="../../../org/graphnav/swing/event/GraphPanelListener.html">GraphPanelListener</a> gpl;
<a name="993" href="#993">993</a>         <strong class="jxr_keyword">for</strong>(Iterator listeners = graphPanelListeners.iterator(); listeners.hasNext(); ) {
<a name="994" href="#994">994</a>             gpl = (GraphPanelListener) listeners.next();
<a name="995" href="#995">995</a>             gpl.nodesMoved( <strong class="jxr_keyword">new</strong> GraphPanelEvent(<strong class="jxr_keyword">this</strong>, selectedNodes, overlappedNodes) );
<a name="996" href="#996">996</a>         }
<a name="997" href="#997">997</a>     }
<a name="998" href="#998">998</a> 
<a name="999" href="#999">999</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> notifyPanelResized(Dimension bounds) {
<a name="1000" href="#1000">1000</a>         <a href="../../../org/graphnav/swing/event/GraphPanelListener.html">GraphPanelListener</a> gpl;
<a name="1001" href="#1001">1001</a>         <strong class="jxr_keyword">for</strong>(Iterator listeners = graphPanelListeners.iterator(); listeners.hasNext(); ) {
<a name="1002" href="#1002">1002</a>             gpl = (GraphPanelListener) listeners.next();
<a name="1003" href="#1003">1003</a>             gpl.panelResized( <strong class="jxr_keyword">new</strong> GraphPanelEvent(<strong class="jxr_keyword">this</strong>, bounds) );
<a name="1004" href="#1004">1004</a>         }
<a name="1005" href="#1005">1005</a>     }
<a name="1006" href="#1006">1006</a> 
<a name="1007" href="#1007">1007</a> 
<a name="1008" href="#1008">1008</a> }
</pre>
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